MagickCore  7.0.3
transform.c
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1 /*
2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3 % %
4 % %
5 % %
6 % TTTTT RRRR AAA N N SSSSS FFFFF OOO RRRR M M %
7 % T R R A A NN N SS F O O R R MM MM %
8 % T RRRR AAAAA N N N SSS FFF O O RRRR M M M %
9 % T R R A A N NN SS F O O R R M M %
10 % T R R A A N N SSSSS F OOO R R M M %
11 % %
12 % %
13 % MagickCore Image Transform Methods %
14 % %
15 % Software Design %
16 % Cristy %
17 % July 1992 %
18 % %
19 % %
20 % Copyright 1999-2019 ImageMagick Studio LLC, a non-profit organization %
21 % dedicated to making software imaging solutions freely available. %
22 % %
23 % You may not use this file except in compliance with the License. You may %
24 % obtain a copy of the License at %
25 % %
26 % https://imagemagick.org/script/license.php %
27 % %
28 % Unless required by applicable law or agreed to in writing, software %
29 % distributed under the License is distributed on an "AS IS" BASIS, %
30 % WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. %
31 % See the License for the specific language governing permissions and %
32 % limitations under the License. %
33 % %
34 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
35 %
36 %
37 */
38 
39 /*
40  Include declarations.
41 */
42 #include "MagickCore/studio.h"
43 #include "MagickCore/attribute.h"
44 #include "MagickCore/cache.h"
45 #include "MagickCore/cache-view.h"
46 #include "MagickCore/color.h"
49 #include "MagickCore/composite.h"
50 #include "MagickCore/distort.h"
51 #include "MagickCore/draw.h"
52 #include "MagickCore/effect.h"
53 #include "MagickCore/exception.h"
55 #include "MagickCore/geometry.h"
56 #include "MagickCore/image.h"
57 #include "MagickCore/memory_.h"
58 #include "MagickCore/layer.h"
59 #include "MagickCore/list.h"
60 #include "MagickCore/monitor.h"
63 #include "MagickCore/resource_.h"
64 #include "MagickCore/resize.h"
65 #include "MagickCore/statistic.h"
66 #include "MagickCore/string_.h"
68 #include "MagickCore/transform.h"
70 
71 /*
72 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
73 % %
74 % %
75 % %
76 % A u t o O r i e n t I m a g e %
77 % %
78 % %
79 % %
80 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
81 %
82 % AutoOrientImage() adjusts an image so that its orientation is suitable for
83 % viewing (i.e. top-left orientation).
84 %
85 % The format of the AutoOrientImage method is:
86 %
87 % Image *AutoOrientImage(const Image *image,
88 % const OrientationType orientation,ExceptionInfo *exception)
89 %
90 % A description of each parameter follows:
91 %
92 % o image: The image.
93 %
94 % o orientation: Current image orientation.
95 %
96 % o exception: Return any errors or warnings in this structure.
97 %
98 */
100  const OrientationType orientation,ExceptionInfo *exception)
101 {
102  Image
103  *orient_image;
104 
105  assert(image != (const Image *) NULL);
106  assert(image->signature == MagickCoreSignature);
107  assert(exception != (ExceptionInfo *) NULL);
108  assert(exception->signature == MagickCoreSignature);
109  orient_image=(Image *) NULL;
110  switch(orientation)
111  {
113  case TopLeftOrientation:
114  default:
115  {
116  orient_image=CloneImage(image,0,0,MagickTrue,exception);
117  break;
118  }
119  case TopRightOrientation:
120  {
121  orient_image=FlopImage(image,exception);
122  break;
123  }
125  {
126  orient_image=RotateImage(image,180.0,exception);
127  break;
128  }
130  {
131  orient_image=FlipImage(image,exception);
132  break;
133  }
134  case LeftTopOrientation:
135  {
136  orient_image=TransposeImage(image,exception);
137  break;
138  }
139  case RightTopOrientation:
140  {
141  orient_image=RotateImage(image,90.0,exception);
142  break;
143  }
145  {
146  orient_image=TransverseImage(image,exception);
147  break;
148  }
150  {
151  orient_image=RotateImage(image,270.0,exception);
152  break;
153  }
154  }
155  if (orient_image != (Image *) NULL)
156  orient_image->orientation=TopLeftOrientation;
157  return(orient_image);
158 }
159 
160 /*
161 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
162 % %
163 % %
164 % %
165 % C h o p I m a g e %
166 % %
167 % %
168 % %
169 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
170 %
171 % ChopImage() removes a region of an image and collapses the image to occupy
172 % the removed portion.
173 %
174 % The format of the ChopImage method is:
175 %
176 % Image *ChopImage(const Image *image,const RectangleInfo *chop_info)
177 % ExceptionInfo *exception)
178 %
179 % A description of each parameter follows:
180 %
181 % o image: the image.
182 %
183 % o chop_info: Define the region of the image to chop.
184 %
185 % o exception: return any errors or warnings in this structure.
186 %
187 */
188 MagickExport Image *ChopImage(const Image *image,const RectangleInfo *chop_info,
189  ExceptionInfo *exception)
190 {
191 #define ChopImageTag "Chop/Image"
192 
193  CacheView
194  *chop_view,
195  *image_view;
196 
197  Image
198  *chop_image;
199 
201  status;
202 
204  progress;
205 
207  extent;
208 
209  ssize_t
210  y;
211 
212  /*
213  Check chop geometry.
214  */
215  assert(image != (const Image *) NULL);
216  assert(image->signature == MagickCoreSignature);
217  if (image->debug != MagickFalse)
218  (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
219  assert(exception != (ExceptionInfo *) NULL);
220  assert(exception->signature == MagickCoreSignature);
221  assert(chop_info != (RectangleInfo *) NULL);
222  if (((chop_info->x+(ssize_t) chop_info->width) < 0) ||
223  ((chop_info->y+(ssize_t) chop_info->height) < 0) ||
224  (chop_info->x > (ssize_t) image->columns) ||
225  (chop_info->y > (ssize_t) image->rows))
226  ThrowImageException(OptionWarning,"GeometryDoesNotContainImage");
227  extent=(*chop_info);
228  if ((extent.x+(ssize_t) extent.width) > (ssize_t) image->columns)
229  extent.width=(size_t) ((ssize_t) image->columns-extent.x);
230  if ((extent.y+(ssize_t) extent.height) > (ssize_t) image->rows)
231  extent.height=(size_t) ((ssize_t) image->rows-extent.y);
232  if (extent.x < 0)
233  {
234  extent.width-=(size_t) (-extent.x);
235  extent.x=0;
236  }
237  if (extent.y < 0)
238  {
239  extent.height-=(size_t) (-extent.y);
240  extent.y=0;
241  }
242  chop_image=CloneImage(image,image->columns-extent.width,image->rows-
243  extent.height,MagickTrue,exception);
244  if (chop_image == (Image *) NULL)
245  return((Image *) NULL);
246  /*
247  Extract chop image.
248  */
249  status=MagickTrue;
250  progress=0;
251  image_view=AcquireVirtualCacheView(image,exception);
252  chop_view=AcquireAuthenticCacheView(chop_image,exception);
253 #if defined(MAGICKCORE_OPENMP_SUPPORT)
254  #pragma omp parallel for schedule(static) shared(status) \
255  magick_number_threads(image,chop_image,extent.y,1)
256 #endif
257  for (y=0; y < (ssize_t) extent.y; y++)
258  {
259  register const Quantum
260  *magick_restrict p;
261 
262  register ssize_t
263  x;
264 
265  register Quantum
266  *magick_restrict q;
267 
268  if (status == MagickFalse)
269  continue;
270  p=GetCacheViewVirtualPixels(image_view,0,y,image->columns,1,exception);
271  q=QueueCacheViewAuthenticPixels(chop_view,0,y,chop_image->columns,1,
272  exception);
273  if ((p == (const Quantum *) NULL) || (q == (Quantum *) NULL))
274  {
275  status=MagickFalse;
276  continue;
277  }
278  for (x=0; x < (ssize_t) image->columns; x++)
279  {
280  if ((x < extent.x) || (x >= (ssize_t) (extent.x+extent.width)))
281  {
282  register ssize_t
283  i;
284 
285  for (i=0; i < (ssize_t) GetPixelChannels(image); i++)
286  {
287  PixelChannel channel = GetPixelChannelChannel(image,i);
288  PixelTrait traits = GetPixelChannelTraits(image,channel);
289  PixelTrait chop_traits=GetPixelChannelTraits(chop_image,channel);
290  if ((traits == UndefinedPixelTrait) ||
291  (chop_traits == UndefinedPixelTrait))
292  continue;
293  SetPixelChannel(chop_image,channel,p[i],q);
294  }
295  q+=GetPixelChannels(chop_image);
296  }
297  p+=GetPixelChannels(image);
298  }
299  if (SyncCacheViewAuthenticPixels(chop_view,exception) == MagickFalse)
300  status=MagickFalse;
301  if (image->progress_monitor != (MagickProgressMonitor) NULL)
302  {
304  proceed;
305 
306 #if defined(MAGICKCORE_OPENMP_SUPPORT)
307  #pragma omp atomic
308 #endif
309  progress++;
310  proceed=SetImageProgress(image,ChopImageTag,progress,image->rows);
311  if (proceed == MagickFalse)
312  status=MagickFalse;
313  }
314  }
315  /*
316  Extract chop image.
317  */
318 #if defined(MAGICKCORE_OPENMP_SUPPORT)
319  #pragma omp parallel for schedule(static) shared(progress,status) \
320  magick_number_threads(image,chop_image,image->rows-(extent.y+extent.height),1)
321 #endif
322  for (y=0; y < (ssize_t) (image->rows-(extent.y+extent.height)); y++)
323  {
324  register const Quantum
325  *magick_restrict p;
326 
327  register ssize_t
328  x;
329 
330  register Quantum
331  *magick_restrict q;
332 
333  if (status == MagickFalse)
334  continue;
335  p=GetCacheViewVirtualPixels(image_view,0,extent.y+extent.height+y,
336  image->columns,1,exception);
337  q=QueueCacheViewAuthenticPixels(chop_view,0,extent.y+y,chop_image->columns,
338  1,exception);
339  if ((p == (const Quantum *) NULL) || (q == (Quantum *) NULL))
340  {
341  status=MagickFalse;
342  continue;
343  }
344  for (x=0; x < (ssize_t) image->columns; x++)
345  {
346  if ((x < extent.x) || (x >= (ssize_t) (extent.x+extent.width)))
347  {
348  register ssize_t
349  i;
350 
351  for (i=0; i < (ssize_t) GetPixelChannels(image); i++)
352  {
353  PixelChannel channel = GetPixelChannelChannel(image,i);
354  PixelTrait traits = GetPixelChannelTraits(image,channel);
355  PixelTrait chop_traits=GetPixelChannelTraits(chop_image,channel);
356  if ((traits == UndefinedPixelTrait) ||
357  (chop_traits == UndefinedPixelTrait))
358  continue;
359  SetPixelChannel(chop_image,channel,p[i],q);
360  }
361  q+=GetPixelChannels(chop_image);
362  }
363  p+=GetPixelChannels(image);
364  }
365  if (SyncCacheViewAuthenticPixels(chop_view,exception) == MagickFalse)
366  status=MagickFalse;
367  if (image->progress_monitor != (MagickProgressMonitor) NULL)
368  {
370  proceed;
371 
372 #if defined(MAGICKCORE_OPENMP_SUPPORT)
373  #pragma omp atomic
374 #endif
375  progress++;
376  proceed=SetImageProgress(image,ChopImageTag,progress,image->rows);
377  if (proceed == MagickFalse)
378  status=MagickFalse;
379  }
380  }
381  chop_view=DestroyCacheView(chop_view);
382  image_view=DestroyCacheView(image_view);
383  chop_image->type=image->type;
384  if (status == MagickFalse)
385  chop_image=DestroyImage(chop_image);
386  return(chop_image);
387 }
388 
389 /*
390 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
391 % %
392 % %
393 % %
394 + C o n s o l i d a t e C M Y K I m a g e %
395 % %
396 % %
397 % %
398 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
399 %
400 % ConsolidateCMYKImage() consolidates separate C, M, Y, and K planes into a
401 % single image.
402 %
403 % The format of the ConsolidateCMYKImage method is:
404 %
405 % Image *ConsolidateCMYKImage(const Image *image,ExceptionInfo *exception)
406 %
407 % A description of each parameter follows:
408 %
409 % o image: the image sequence.
410 %
411 % o exception: return any errors or warnings in this structure.
412 %
413 */
415  ExceptionInfo *exception)
416 {
417  CacheView
418  *cmyk_view,
419  *image_view;
420 
421  Image
422  *cmyk_image,
423  *cmyk_images;
424 
425  register ssize_t
426  j;
427 
428  ssize_t
429  y;
430 
431  /*
432  Consolidate separate C, M, Y, and K planes into a single image.
433  */
434  assert(images != (Image *) NULL);
435  assert(images->signature == MagickCoreSignature);
436  if (images->debug != MagickFalse)
437  (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",images->filename);
438  assert(exception != (ExceptionInfo *) NULL);
439  assert(exception->signature == MagickCoreSignature);
440  cmyk_images=NewImageList();
441  for (j=0; j < (ssize_t) GetImageListLength(images); j+=4)
442  {
443  register ssize_t
444  i;
445 
446  assert(images != (Image *) NULL);
447  cmyk_image=CloneImage(images,0,0,MagickTrue,
448  exception);
449  if (cmyk_image == (Image *) NULL)
450  break;
451  if (SetImageStorageClass(cmyk_image,DirectClass,exception) == MagickFalse)
452  break;
453  (void) SetImageColorspace(cmyk_image,CMYKColorspace,exception);
454  for (i=0; i < 4; i++)
455  {
456  image_view=AcquireVirtualCacheView(images,exception);
457  cmyk_view=AcquireAuthenticCacheView(cmyk_image,exception);
458  for (y=0; y < (ssize_t) images->rows; y++)
459  {
460  register const Quantum
461  *magick_restrict p;
462 
463  register ssize_t
464  x;
465 
466  register Quantum
467  *magick_restrict q;
468 
469  p=GetCacheViewVirtualPixels(image_view,0,y,images->columns,1,exception);
470  q=QueueCacheViewAuthenticPixels(cmyk_view,0,y,cmyk_image->columns,1,
471  exception);
472  if ((p == (const Quantum *) NULL) || (q == (Quantum *) NULL))
473  break;
474  for (x=0; x < (ssize_t) images->columns; x++)
475  {
476  Quantum
477  pixel;
478 
480  switch (i)
481  {
482  case 0: SetPixelCyan(cmyk_image,pixel,q); break;
483  case 1: SetPixelMagenta(cmyk_image,pixel,q); break;
484  case 2: SetPixelYellow(cmyk_image,pixel,q); break;
485  case 3: SetPixelBlack(cmyk_image,pixel,q); break;
486  default: break;
487  }
488  p+=GetPixelChannels(images);
489  q+=GetPixelChannels(cmyk_image);
490  }
491  if (SyncCacheViewAuthenticPixels(cmyk_view,exception) == MagickFalse)
492  break;
493  }
494  cmyk_view=DestroyCacheView(cmyk_view);
495  image_view=DestroyCacheView(image_view);
496  images=GetNextImageInList(images);
497  if (images == (Image *) NULL)
498  break;
499  }
500  AppendImageToList(&cmyk_images,cmyk_image);
501  }
502  return(cmyk_images);
503 }
504 
505 /*
506 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
507 % %
508 % %
509 % %
510 % C r o p I m a g e %
511 % %
512 % %
513 % %
514 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
515 %
516 % CropImage() extracts a region of the image starting at the offset defined
517 % by geometry. Region must be fully defined, and no special handling of
518 % geometry flags is performed.
519 %
520 % The format of the CropImage method is:
521 %
522 % Image *CropImage(const Image *image,const RectangleInfo *geometry,
523 % ExceptionInfo *exception)
524 %
525 % A description of each parameter follows:
526 %
527 % o image: the image.
528 %
529 % o geometry: Define the region of the image to crop with members
530 % x, y, width, and height.
531 %
532 % o exception: return any errors or warnings in this structure.
533 %
534 */
535 MagickExport Image *CropImage(const Image *image,const RectangleInfo *geometry,
536  ExceptionInfo *exception)
537 {
538 #define CropImageTag "Crop/Image"
539 
540  CacheView
541  *crop_view,
542  *image_view;
543 
544  Image
545  *crop_image;
546 
548  status;
549 
551  progress;
552 
553  OffsetInfo
554  offset;
555 
557  bounding_box,
558  page;
559 
560  ssize_t
561  y;
562 
563  /*
564  Check crop geometry.
565  */
566  assert(image != (const Image *) NULL);
567  assert(image->signature == MagickCoreSignature);
568  if (image->debug != MagickFalse)
569  (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
570  assert(geometry != (const RectangleInfo *) NULL);
571  assert(exception != (ExceptionInfo *) NULL);
572  assert(exception->signature == MagickCoreSignature);
573  bounding_box=image->page;
574  if ((bounding_box.width == 0) || (bounding_box.height == 0))
575  {
576  bounding_box.width=image->columns;
577  bounding_box.height=image->rows;
578  }
579  page=(*geometry);
580  if (page.width == 0)
581  page.width=bounding_box.width;
582  if (page.height == 0)
583  page.height=bounding_box.height;
584  if (((bounding_box.x-page.x) >= (ssize_t) page.width) ||
585  ((bounding_box.y-page.y) >= (ssize_t) page.height) ||
586  ((page.x-bounding_box.x) > (ssize_t) image->columns) ||
587  ((page.y-bounding_box.y) > (ssize_t) image->rows))
588  {
589  /*
590  Crop is not within virtual canvas, return 1 pixel transparent image.
591  */
593  "GeometryDoesNotContainImage","`%s'",image->filename);
594  crop_image=CloneImage(image,1,1,MagickTrue,exception);
595  if (crop_image == (Image *) NULL)
596  return((Image *) NULL);
598  crop_image->alpha_trait=BlendPixelTrait;
599  (void) SetImageBackgroundColor(crop_image,exception);
600  crop_image->page=bounding_box;
601  crop_image->page.x=(-1);
602  crop_image->page.y=(-1);
603  if (crop_image->dispose == BackgroundDispose)
604  crop_image->dispose=NoneDispose;
605  return(crop_image);
606  }
607  if ((page.x < 0) && (bounding_box.x >= 0))
608  {
609  page.width+=page.x-bounding_box.x;
610  page.x=0;
611  }
612  else
613  {
614  page.width-=bounding_box.x-page.x;
615  page.x-=bounding_box.x;
616  if (page.x < 0)
617  page.x=0;
618  }
619  if ((page.y < 0) && (bounding_box.y >= 0))
620  {
621  page.height+=page.y-bounding_box.y;
622  page.y=0;
623  }
624  else
625  {
626  page.height-=bounding_box.y-page.y;
627  page.y-=bounding_box.y;
628  if (page.y < 0)
629  page.y=0;
630  }
631  if ((page.x+(ssize_t) page.width) > (ssize_t) image->columns)
632  page.width=image->columns-page.x;
633  if ((geometry->width != 0) && (page.width > geometry->width))
634  page.width=geometry->width;
635  if ((page.y+(ssize_t) page.height) > (ssize_t) image->rows)
636  page.height=image->rows-page.y;
637  if ((geometry->height != 0) && (page.height > geometry->height))
638  page.height=geometry->height;
639  bounding_box.x+=page.x;
640  bounding_box.y+=page.y;
641  if ((page.width == 0) || (page.height == 0))
642  {
644  "GeometryDoesNotContainImage","`%s'",image->filename);
645  return((Image *) NULL);
646  }
647  /*
648  Initialize crop image attributes.
649  */
650  crop_image=CloneImage(image,page.width,page.height,MagickTrue,exception);
651  if (crop_image == (Image *) NULL)
652  return((Image *) NULL);
653  crop_image->page.width=image->page.width;
654  crop_image->page.height=image->page.height;
655  offset.x=(ssize_t) (bounding_box.x+bounding_box.width);
656  offset.y=(ssize_t) (bounding_box.y+bounding_box.height);
657  if ((offset.x > (ssize_t) image->page.width) ||
658  (offset.y > (ssize_t) image->page.height))
659  {
660  crop_image->page.width=bounding_box.width;
661  crop_image->page.height=bounding_box.height;
662  }
663  crop_image->page.x=bounding_box.x;
664  crop_image->page.y=bounding_box.y;
665  /*
666  Crop image.
667  */
668  status=MagickTrue;
669  progress=0;
670  image_view=AcquireVirtualCacheView(image,exception);
671  crop_view=AcquireAuthenticCacheView(crop_image,exception);
672 #if defined(MAGICKCORE_OPENMP_SUPPORT)
673  #pragma omp parallel for schedule(static) shared(status) \
674  magick_number_threads(image,crop_image,crop_image->rows,1)
675 #endif
676  for (y=0; y < (ssize_t) crop_image->rows; y++)
677  {
678  register const Quantum
679  *magick_restrict p;
680 
681  register Quantum
682  *magick_restrict q;
683 
684  register ssize_t
685  x;
686 
687  if (status == MagickFalse)
688  continue;
689  p=GetCacheViewVirtualPixels(image_view,page.x,page.y+y,crop_image->columns,
690  1,exception);
691  q=QueueCacheViewAuthenticPixels(crop_view,0,y,crop_image->columns,1,
692  exception);
693  if ((p == (const Quantum *) NULL) || (q == (Quantum *) NULL))
694  {
695  status=MagickFalse;
696  continue;
697  }
698  for (x=0; x < (ssize_t) crop_image->columns; x++)
699  {
700  register ssize_t
701  i;
702 
703  for (i=0; i < (ssize_t) GetPixelChannels(image); i++)
704  {
705  PixelChannel channel = GetPixelChannelChannel(image,i);
706  PixelTrait traits = GetPixelChannelTraits(image,channel);
707  PixelTrait crop_traits=GetPixelChannelTraits(crop_image,channel);
708  if ((traits == UndefinedPixelTrait) ||
709  (crop_traits == UndefinedPixelTrait))
710  continue;
711  SetPixelChannel(crop_image,channel,p[i],q);
712  }
713  p+=GetPixelChannels(image);
714  q+=GetPixelChannels(crop_image);
715  }
716  if (SyncCacheViewAuthenticPixels(crop_view,exception) == MagickFalse)
717  status=MagickFalse;
718  if (image->progress_monitor != (MagickProgressMonitor) NULL)
719  {
721  proceed;
722 
723 #if defined(MAGICKCORE_OPENMP_SUPPORT)
724  #pragma omp atomic
725 #endif
726  progress++;
727  proceed=SetImageProgress(image,CropImageTag,progress,image->rows);
728  if (proceed == MagickFalse)
729  status=MagickFalse;
730  }
731  }
732  crop_view=DestroyCacheView(crop_view);
733  image_view=DestroyCacheView(image_view);
734  crop_image->type=image->type;
735  if (status == MagickFalse)
736  crop_image=DestroyImage(crop_image);
737  return(crop_image);
738 }
739 
740 /*
741 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
742 % %
743 % %
744 % %
745 % C r o p I m a g e T o T i l e s %
746 % %
747 % %
748 % %
749 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
750 %
751 % CropImageToTiles() crops a single image, into a possible list of tiles.
752 % This may include a single sub-region of the image. This basically applies
753 % all the normal geometry flags for Crop.
754 %
755 % Image *CropImageToTiles(const Image *image,
756 % const RectangleInfo *crop_geometry, ExceptionInfo *exception)
757 %
758 % A description of each parameter follows:
759 %
760 % o image: the image The transformed image is returned as this parameter.
761 %
762 % o crop_geometry: A crop geometry string.
763 %
764 % o exception: return any errors or warnings in this structure.
765 %
766 */
767 
768 static inline double MagickRound(double x)
769 {
770  /*
771  Round the fraction to nearest integer.
772  */
773  if ((x-floor(x)) < (ceil(x)-x))
774  return(floor(x));
775  return(ceil(x));
776 }
777 
779  const char *crop_geometry,ExceptionInfo *exception)
780 {
781  Image
782  *next,
783  *crop_image;
784 
786  flags;
787 
789  geometry;
790 
791  assert(image != (Image *) NULL);
792  assert(image->signature == MagickCoreSignature);
793  if (image->debug != MagickFalse)
794  (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
795  crop_image=NewImageList();
796  next=NewImageList();
797  flags=ParseGravityGeometry(image,crop_geometry,&geometry,exception);
798  if ((flags & AreaValue) != 0)
799  {
800  PointInfo
801  delta,
802  offset;
803 
805  crop;
806 
807  size_t
808  height,
809  width;
810 
811  /*
812  Crop into NxM tiles (@ flag).
813  */
814  width=image->columns;
815  height=image->rows;
816  if (geometry.width == 0)
817  geometry.width=1;
818  if (geometry.height == 0)
819  geometry.height=1;
820  if ((flags & AspectValue) == 0)
821  {
822  width-=(geometry.x < 0 ? -1 : 1)*geometry.x;
823  height-=(geometry.y < 0 ? -1 : 1)*geometry.y;
824  }
825  else
826  {
827  width+=(geometry.x < 0 ? -1 : 1)*geometry.x;
828  height+=(geometry.y < 0 ? -1 : 1)*geometry.y;
829  }
830  delta.x=(double) width/geometry.width;
831  delta.y=(double) height/geometry.height;
832  if (delta.x < 1.0)
833  delta.x=1.0;
834  if (delta.y < 1.0)
835  delta.y=1.0;
836  for (offset.y=0; offset.y < (double) height; )
837  {
838  if ((flags & AspectValue) == 0)
839  {
840  crop.y=(ssize_t) MagickRound((double) (offset.y-
841  (geometry.y > 0 ? 0 : geometry.y)));
842  offset.y+=delta.y; /* increment now to find width */
843  crop.height=(size_t) MagickRound((double) (offset.y+
844  (geometry.y < 0 ? 0 : geometry.y)));
845  }
846  else
847  {
848  crop.y=(ssize_t) MagickRound((double) (offset.y-
849  (geometry.y > 0 ? geometry.y : 0)));
850  offset.y+=delta.y; /* increment now to find width */
851  crop.height=(size_t) MagickRound((double)
852  (offset.y+(geometry.y < -1 ? geometry.y : 0)));
853  }
854  crop.height-=crop.y;
855  crop.y+=image->page.y;
856  for (offset.x=0; offset.x < (double) width; )
857  {
858  if ((flags & AspectValue) == 0)
859  {
860  crop.x=(ssize_t) MagickRound((double) (offset.x-
861  (geometry.x > 0 ? 0 : geometry.x)));
862  offset.x+=delta.x; /* increment now to find height */
863  crop.width=(size_t) MagickRound((double) (offset.x+
864  (geometry.x < 0 ? 0 : geometry.x)));
865  }
866  else
867  {
868  crop.x=(ssize_t) MagickRound((double) (offset.x-
869  (geometry.x > 0 ? geometry.x : 0)));
870  offset.x+=delta.x; /* increment now to find height */
871  crop.width=(size_t) MagickRound((double) (offset.x+
872  (geometry.x < 0 ? geometry.x : 0)));
873  }
874  crop.width-=crop.x;
875  crop.x+=image->page.x;
876  next=CropImage(image,&crop,exception);
877  if (next != (Image *) NULL)
878  AppendImageToList(&crop_image,next);
879  }
880  }
881  ClearMagickException(exception);
882  return(crop_image);
883  }
884  if (((geometry.width == 0) && (geometry.height == 0)) ||
885  ((flags & XValue) != 0) || ((flags & YValue) != 0))
886  {
887  /*
888  Crop a single region at +X+Y.
889  */
890  crop_image=CropImage(image,&geometry,exception);
891  if ((crop_image != (Image *) NULL) && ((flags & AspectValue) != 0))
892  {
893  crop_image->page.width=geometry.width;
894  crop_image->page.height=geometry.height;
895  }
896  return(crop_image);
897  }
898  if ((image->columns > geometry.width) || (image->rows > geometry.height))
899  {
901  page;
902 
903  size_t
904  height,
905  width;
906 
907  ssize_t
908  x,
909  y;
910 
911  /*
912  Crop into tiles of fixed size WxH.
913  */
914  page=image->page;
915  if (page.width == 0)
916  page.width=image->columns;
917  if (page.height == 0)
918  page.height=image->rows;
919  width=geometry.width;
920  if (width == 0)
921  width=page.width;
922  height=geometry.height;
923  if (height == 0)
924  height=page.height;
925  next=NewImageList();
926  for (y=0; y < (ssize_t) page.height; y+=(ssize_t) height)
927  {
928  for (x=0; x < (ssize_t) page.width; x+=(ssize_t) width)
929  {
930  geometry.width=width;
931  geometry.height=height;
932  geometry.x=x;
933  geometry.y=y;
934  next=CropImage(image,&geometry,exception);
935  if (next == (Image *) NULL)
936  break;
937  AppendImageToList(&crop_image,next);
938  }
939  if (next == (Image *) NULL)
940  break;
941  }
942  return(crop_image);
943  }
944  return(CloneImage(image,0,0,MagickTrue,exception));
945 }
946 
947 /*
948 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
949 % %
950 % %
951 % %
952 % E x c e r p t I m a g e %
953 % %
954 % %
955 % %
956 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
957 %
958 % ExcerptImage() returns a excerpt of the image as defined by the geometry.
959 %
960 % The format of the ExcerptImage method is:
961 %
962 % Image *ExcerptImage(const Image *image,const RectangleInfo *geometry,
963 % ExceptionInfo *exception)
964 %
965 % A description of each parameter follows:
966 %
967 % o image: the image.
968 %
969 % o geometry: Define the region of the image to extend with members
970 % x, y, width, and height.
971 %
972 % o exception: return any errors or warnings in this structure.
973 %
974 */
976  const RectangleInfo *geometry,ExceptionInfo *exception)
977 {
978 #define ExcerptImageTag "Excerpt/Image"
979 
980  CacheView
981  *excerpt_view,
982  *image_view;
983 
984  Image
985  *excerpt_image;
986 
988  status;
989 
991  progress;
992 
993  ssize_t
994  y;
995 
996  /*
997  Allocate excerpt image.
998  */
999  assert(image != (const Image *) NULL);
1000  assert(image->signature == MagickCoreSignature);
1001  if (image->debug != MagickFalse)
1002  (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
1003  assert(geometry != (const RectangleInfo *) NULL);
1004  assert(exception != (ExceptionInfo *) NULL);
1005  assert(exception->signature == MagickCoreSignature);
1006  excerpt_image=CloneImage(image,geometry->width,geometry->height,MagickTrue,
1007  exception);
1008  if (excerpt_image == (Image *) NULL)
1009  return((Image *) NULL);
1010  /*
1011  Excerpt each row.
1012  */
1013  status=MagickTrue;
1014  progress=0;
1015  image_view=AcquireVirtualCacheView(image,exception);
1016  excerpt_view=AcquireAuthenticCacheView(excerpt_image,exception);
1017 #if defined(MAGICKCORE_OPENMP_SUPPORT)
1018  #pragma omp parallel for schedule(static) shared(progress,status) \
1019  magick_number_threads(image,excerpt_image,excerpt_image->rows,1)
1020 #endif
1021  for (y=0; y < (ssize_t) excerpt_image->rows; y++)
1022  {
1023  register const Quantum
1024  *magick_restrict p;
1025 
1026  register Quantum
1027  *magick_restrict q;
1028 
1029  register ssize_t
1030  x;
1031 
1032  if (status == MagickFalse)
1033  continue;
1034  p=GetCacheViewVirtualPixels(image_view,geometry->x,geometry->y+y,
1035  geometry->width,1,exception);
1036  q=GetCacheViewAuthenticPixels(excerpt_view,0,y,excerpt_image->columns,1,
1037  exception);
1038  if ((p == (const Quantum *) NULL) || (q == (Quantum *) NULL))
1039  {
1040  status=MagickFalse;
1041  continue;
1042  }
1043  for (x=0; x < (ssize_t) excerpt_image->columns; x++)
1044  {
1045  register ssize_t
1046  i;
1047 
1048  for (i=0; i < (ssize_t) GetPixelChannels(image); i++)
1049  {
1050  PixelChannel channel = GetPixelChannelChannel(image,i);
1051  PixelTrait traits = GetPixelChannelTraits(image,channel);
1052  PixelTrait excerpt_traits=GetPixelChannelTraits(excerpt_image,channel);
1053  if ((traits == UndefinedPixelTrait) ||
1054  (excerpt_traits == UndefinedPixelTrait))
1055  continue;
1056  SetPixelChannel(excerpt_image,channel,p[i],q);
1057  }
1058  p+=GetPixelChannels(image);
1059  q+=GetPixelChannels(excerpt_image);
1060  }
1061  if (SyncCacheViewAuthenticPixels(excerpt_view,exception) == MagickFalse)
1062  status=MagickFalse;
1063  if (image->progress_monitor != (MagickProgressMonitor) NULL)
1064  {
1066  proceed;
1067 
1068 #if defined(MAGICKCORE_OPENMP_SUPPORT)
1069  #pragma omp atomic
1070 #endif
1071  progress++;
1072  proceed=SetImageProgress(image,ExcerptImageTag,progress,image->rows);
1073  if (proceed == MagickFalse)
1074  status=MagickFalse;
1075  }
1076  }
1077  excerpt_view=DestroyCacheView(excerpt_view);
1078  image_view=DestroyCacheView(image_view);
1079  excerpt_image->type=image->type;
1080  if (status == MagickFalse)
1081  excerpt_image=DestroyImage(excerpt_image);
1082  return(excerpt_image);
1083 }
1084 
1085 /*
1086 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1087 % %
1088 % %
1089 % %
1090 % E x t e n t I m a g e %
1091 % %
1092 % %
1093 % %
1094 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1095 %
1096 % ExtentImage() extends the image as defined by the geometry, gravity, and
1097 % image background color. Set the (x,y) offset of the geometry to move the
1098 % original image relative to the extended image.
1099 %
1100 % The format of the ExtentImage method is:
1101 %
1102 % Image *ExtentImage(const Image *image,const RectangleInfo *geometry,
1103 % ExceptionInfo *exception)
1104 %
1105 % A description of each parameter follows:
1106 %
1107 % o image: the image.
1108 %
1109 % o geometry: Define the region of the image to extend with members
1110 % x, y, width, and height.
1111 %
1112 % o exception: return any errors or warnings in this structure.
1113 %
1114 */
1116  const RectangleInfo *geometry,ExceptionInfo *exception)
1117 {
1118  Image
1119  *extent_image;
1120 
1122  status;
1123 
1124  /*
1125  Allocate extent image.
1126  */
1127  assert(image != (const Image *) NULL);
1128  assert(image->signature == MagickCoreSignature);
1129  if (image->debug != MagickFalse)
1130  (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
1131  assert(geometry != (const RectangleInfo *) NULL);
1132  assert(exception != (ExceptionInfo *) NULL);
1133  assert(exception->signature == MagickCoreSignature);
1134  extent_image=CloneImage(image,geometry->width,geometry->height,MagickTrue,
1135  exception);
1136  if (extent_image == (Image *) NULL)
1137  return((Image *) NULL);
1138  status=SetImageBackgroundColor(extent_image,exception);
1139  if (status == MagickFalse)
1140  {
1141  extent_image=DestroyImage(extent_image);
1142  return((Image *) NULL);
1143  }
1144  status=CompositeImage(extent_image,image,image->compose,MagickTrue,
1145  -geometry->x,-geometry->y,exception);
1146  return(extent_image);
1147 }
1148 
1149 /*
1150 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1151 % %
1152 % %
1153 % %
1154 % F l i p I m a g e %
1155 % %
1156 % %
1157 % %
1158 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1159 %
1160 % FlipImage() creates a vertical mirror image by reflecting the pixels
1161 % around the central x-axis.
1162 %
1163 % The format of the FlipImage method is:
1164 %
1165 % Image *FlipImage(const Image *image,ExceptionInfo *exception)
1166 %
1167 % A description of each parameter follows:
1168 %
1169 % o image: the image.
1170 %
1171 % o exception: return any errors or warnings in this structure.
1172 %
1173 */
1175 {
1176 #define FlipImageTag "Flip/Image"
1177 
1178  CacheView
1179  *flip_view,
1180  *image_view;
1181 
1182  Image
1183  *flip_image;
1184 
1186  status;
1187 
1189  progress;
1190 
1192  page;
1193 
1194  ssize_t
1195  y;
1196 
1197  assert(image != (const Image *) NULL);
1198  assert(image->signature == MagickCoreSignature);
1199  if (image->debug != MagickFalse)
1200  (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
1201  assert(exception != (ExceptionInfo *) NULL);
1202  assert(exception->signature == MagickCoreSignature);
1203  flip_image=CloneImage(image,0,0,MagickTrue,exception);
1204  if (flip_image == (Image *) NULL)
1205  return((Image *) NULL);
1206  /*
1207  Flip image.
1208  */
1209  status=MagickTrue;
1210  progress=0;
1211  page=image->page;
1212  image_view=AcquireVirtualCacheView(image,exception);
1213  flip_view=AcquireAuthenticCacheView(flip_image,exception);
1214 #if defined(MAGICKCORE_OPENMP_SUPPORT)
1215  #pragma omp parallel for schedule(static) shared(status) \
1216  magick_number_threads(image,flip_image,flip_image->rows,1)
1217 #endif
1218  for (y=0; y < (ssize_t) flip_image->rows; y++)
1219  {
1220  register const Quantum
1221  *magick_restrict p;
1222 
1223  register Quantum
1224  *magick_restrict q;
1225 
1226  register ssize_t
1227  x;
1228 
1229  if (status == MagickFalse)
1230  continue;
1231  p=GetCacheViewVirtualPixels(image_view,0,y,image->columns,1,exception);
1232  q=QueueCacheViewAuthenticPixels(flip_view,0,(ssize_t) (flip_image->rows-y-
1233  1),flip_image->columns,1,exception);
1234  if ((p == (const Quantum *) NULL) || (q == (Quantum *) NULL))
1235  {
1236  status=MagickFalse;
1237  continue;
1238  }
1239  for (x=0; x < (ssize_t) flip_image->columns; x++)
1240  {
1241  register ssize_t
1242  i;
1243 
1244  for (i=0; i < (ssize_t) GetPixelChannels(image); i++)
1245  {
1246  PixelChannel channel = GetPixelChannelChannel(image,i);
1247  PixelTrait traits = GetPixelChannelTraits(image,channel);
1248  PixelTrait flip_traits=GetPixelChannelTraits(flip_image,channel);
1249  if ((traits == UndefinedPixelTrait) ||
1250  (flip_traits == UndefinedPixelTrait))
1251  continue;
1252  SetPixelChannel(flip_image,channel,p[i],q);
1253  }
1254  p+=GetPixelChannels(image);
1255  q+=GetPixelChannels(flip_image);
1256  }
1257  if (SyncCacheViewAuthenticPixels(flip_view,exception) == MagickFalse)
1258  status=MagickFalse;
1259  if (image->progress_monitor != (MagickProgressMonitor) NULL)
1260  {
1262  proceed;
1263 
1264 #if defined(MAGICKCORE_OPENMP_SUPPORT)
1265  #pragma omp atomic
1266 #endif
1267  progress++;
1268  proceed=SetImageProgress(image,FlipImageTag,progress,image->rows);
1269  if (proceed == MagickFalse)
1270  status=MagickFalse;
1271  }
1272  }
1273  flip_view=DestroyCacheView(flip_view);
1274  image_view=DestroyCacheView(image_view);
1275  flip_image->type=image->type;
1276  if (page.height != 0)
1277  page.y=(ssize_t) (page.height-flip_image->rows-page.y);
1278  flip_image->page=page;
1279  if (status == MagickFalse)
1280  flip_image=DestroyImage(flip_image);
1281  return(flip_image);
1282 }
1283 
1284 /*
1285 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1286 % %
1287 % %
1288 % %
1289 % F l o p I m a g e %
1290 % %
1291 % %
1292 % %
1293 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1294 %
1295 % FlopImage() creates a horizontal mirror image by reflecting the pixels
1296 % around the central y-axis.
1297 %
1298 % The format of the FlopImage method is:
1299 %
1300 % Image *FlopImage(const Image *image,ExceptionInfo *exception)
1301 %
1302 % A description of each parameter follows:
1303 %
1304 % o image: the image.
1305 %
1306 % o exception: return any errors or warnings in this structure.
1307 %
1308 */
1310 {
1311 #define FlopImageTag "Flop/Image"
1312 
1313  CacheView
1314  *flop_view,
1315  *image_view;
1316 
1317  Image
1318  *flop_image;
1319 
1321  status;
1322 
1324  progress;
1325 
1327  page;
1328 
1329  ssize_t
1330  y;
1331 
1332  assert(image != (const Image *) NULL);
1333  assert(image->signature == MagickCoreSignature);
1334  if (image->debug != MagickFalse)
1335  (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
1336  assert(exception != (ExceptionInfo *) NULL);
1337  assert(exception->signature == MagickCoreSignature);
1338  flop_image=CloneImage(image,0,0,MagickTrue,exception);
1339  if (flop_image == (Image *) NULL)
1340  return((Image *) NULL);
1341  /*
1342  Flop each row.
1343  */
1344  status=MagickTrue;
1345  progress=0;
1346  page=image->page;
1347  image_view=AcquireVirtualCacheView(image,exception);
1348  flop_view=AcquireAuthenticCacheView(flop_image,exception);
1349 #if defined(MAGICKCORE_OPENMP_SUPPORT)
1350  #pragma omp parallel for schedule(static) shared(status) \
1351  magick_number_threads(image,flop_image,flop_image->rows,1)
1352 #endif
1353  for (y=0; y < (ssize_t) flop_image->rows; y++)
1354  {
1355  register const Quantum
1356  *magick_restrict p;
1357 
1358  register ssize_t
1359  x;
1360 
1361  register Quantum
1362  *magick_restrict q;
1363 
1364  if (status == MagickFalse)
1365  continue;
1366  p=GetCacheViewVirtualPixels(image_view,0,y,image->columns,1,exception);
1367  q=QueueCacheViewAuthenticPixels(flop_view,0,y,flop_image->columns,1,
1368  exception);
1369  if ((p == (const Quantum *) NULL) || (q == (Quantum *) NULL))
1370  {
1371  status=MagickFalse;
1372  continue;
1373  }
1374  q+=GetPixelChannels(flop_image)*flop_image->columns;
1375  for (x=0; x < (ssize_t) flop_image->columns; x++)
1376  {
1377  register ssize_t
1378  i;
1379 
1380  q-=GetPixelChannels(flop_image);
1381  for (i=0; i < (ssize_t) GetPixelChannels(image); i++)
1382  {
1383  PixelChannel channel = GetPixelChannelChannel(image,i);
1384  PixelTrait traits = GetPixelChannelTraits(image,channel);
1385  PixelTrait flop_traits=GetPixelChannelTraits(flop_image,channel);
1386  if ((traits == UndefinedPixelTrait) ||
1387  (flop_traits == UndefinedPixelTrait))
1388  continue;
1389  SetPixelChannel(flop_image,channel,p[i],q);
1390  }
1391  p+=GetPixelChannels(image);
1392  }
1393  if (SyncCacheViewAuthenticPixels(flop_view,exception) == MagickFalse)
1394  status=MagickFalse;
1395  if (image->progress_monitor != (MagickProgressMonitor) NULL)
1396  {
1398  proceed;
1399 
1400 #if defined(MAGICKCORE_OPENMP_SUPPORT)
1401  #pragma omp atomic
1402 #endif
1403  progress++;
1404  proceed=SetImageProgress(image,FlopImageTag,progress,image->rows);
1405  if (proceed == MagickFalse)
1406  status=MagickFalse;
1407  }
1408  }
1409  flop_view=DestroyCacheView(flop_view);
1410  image_view=DestroyCacheView(image_view);
1411  flop_image->type=image->type;
1412  if (page.width != 0)
1413  page.x=(ssize_t) (page.width-flop_image->columns-page.x);
1414  flop_image->page=page;
1415  if (status == MagickFalse)
1416  flop_image=DestroyImage(flop_image);
1417  return(flop_image);
1418 }
1419 
1420 /*
1421 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1422 % %
1423 % %
1424 % %
1425 % R o l l I m a g e %
1426 % %
1427 % %
1428 % %
1429 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1430 %
1431 % RollImage() offsets an image as defined by x_offset and y_offset.
1432 %
1433 % The format of the RollImage method is:
1434 %
1435 % Image *RollImage(const Image *image,const ssize_t x_offset,
1436 % const ssize_t y_offset,ExceptionInfo *exception)
1437 %
1438 % A description of each parameter follows:
1439 %
1440 % o image: the image.
1441 %
1442 % o x_offset: the number of columns to roll in the horizontal direction.
1443 %
1444 % o y_offset: the number of rows to roll in the vertical direction.
1445 %
1446 % o exception: return any errors or warnings in this structure.
1447 %
1448 */
1449 
1450 static MagickBooleanType CopyImageRegion(Image *destination,const Image *source, const size_t columns,const size_t rows,const ssize_t sx,const ssize_t sy,
1451  const ssize_t dx,const ssize_t dy,ExceptionInfo *exception)
1452 {
1453  CacheView
1454  *source_view,
1455  *destination_view;
1456 
1458  status;
1459 
1460  ssize_t
1461  y;
1462 
1463  if (columns == 0)
1464  return(MagickTrue);
1465  status=MagickTrue;
1466  source_view=AcquireVirtualCacheView(source,exception);
1467  destination_view=AcquireAuthenticCacheView(destination,exception);
1468 #if defined(MAGICKCORE_OPENMP_SUPPORT)
1469  #pragma omp parallel for schedule(static) shared(status) \
1470  magick_number_threads(source,destination,rows,1)
1471 #endif
1472  for (y=0; y < (ssize_t) rows; y++)
1473  {
1475  sync;
1476 
1477  register const Quantum
1478  *magick_restrict p;
1479 
1480  register Quantum
1481  *magick_restrict q;
1482 
1483  register ssize_t
1484  x;
1485 
1486  /*
1487  Transfer scanline.
1488  */
1489  if (status == MagickFalse)
1490  continue;
1491  p=GetCacheViewVirtualPixels(source_view,sx,sy+y,columns,1,exception);
1492  q=GetCacheViewAuthenticPixels(destination_view,dx,dy+y,columns,1,exception);
1493  if ((p == (const Quantum *) NULL) || (q == (Quantum *) NULL))
1494  {
1495  status=MagickFalse;
1496  continue;
1497  }
1498  for (x=0; x < (ssize_t) columns; x++)
1499  {
1500  register ssize_t
1501  i;
1502 
1503  for (i=0; i < (ssize_t) GetPixelChannels(source); i++)
1504  {
1505  PixelChannel channel = GetPixelChannelChannel(source,i);
1506  PixelTrait source_traits=GetPixelChannelTraits(source,channel);
1507  PixelTrait destination_traits=GetPixelChannelTraits(destination,
1508  channel);
1509  if ((source_traits == UndefinedPixelTrait) ||
1510  (destination_traits == UndefinedPixelTrait))
1511  continue;
1512  SetPixelChannel(destination,channel,p[i],q);
1513  }
1514  p+=GetPixelChannels(source);
1515  q+=GetPixelChannels(destination);
1516  }
1517  sync=SyncCacheViewAuthenticPixels(destination_view,exception);
1518  if (sync == MagickFalse)
1519  status=MagickFalse;
1520  }
1521  destination_view=DestroyCacheView(destination_view);
1522  source_view=DestroyCacheView(source_view);
1523  return(status);
1524 }
1525 
1526 MagickExport Image *RollImage(const Image *image,const ssize_t x_offset,
1527  const ssize_t y_offset,ExceptionInfo *exception)
1528 {
1529 #define RollImageTag "Roll/Image"
1530 
1531  Image
1532  *roll_image;
1533 
1535  status;
1536 
1538  offset;
1539 
1540  /*
1541  Initialize roll image attributes.
1542  */
1543  assert(image != (const Image *) NULL);
1544  assert(image->signature == MagickCoreSignature);
1545  if (image->debug != MagickFalse)
1546  (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
1547  assert(exception != (ExceptionInfo *) NULL);
1548  assert(exception->signature == MagickCoreSignature);
1549  roll_image=CloneImage(image,0,0,MagickTrue,exception);
1550  if (roll_image == (Image *) NULL)
1551  return((Image *) NULL);
1552  offset.x=x_offset;
1553  offset.y=y_offset;
1554  while (offset.x < 0)
1555  offset.x+=(ssize_t) image->columns;
1556  while (offset.x >= (ssize_t) image->columns)
1557  offset.x-=(ssize_t) image->columns;
1558  while (offset.y < 0)
1559  offset.y+=(ssize_t) image->rows;
1560  while (offset.y >= (ssize_t) image->rows)
1561  offset.y-=(ssize_t) image->rows;
1562  /*
1563  Roll image.
1564  */
1565  status=CopyImageRegion(roll_image,image,(size_t) offset.x,
1566  (size_t) offset.y,(ssize_t) image->columns-offset.x,(ssize_t) image->rows-
1567  offset.y,0,0,exception);
1568  (void) SetImageProgress(image,RollImageTag,0,3);
1569  status&=CopyImageRegion(roll_image,image,image->columns-offset.x,
1570  (size_t) offset.y,0,(ssize_t) image->rows-offset.y,offset.x,0,
1571  exception);
1572  (void) SetImageProgress(image,RollImageTag,1,3);
1573  status&=CopyImageRegion(roll_image,image,(size_t) offset.x,image->rows-
1574  offset.y,(ssize_t) image->columns-offset.x,0,0,offset.y,exception);
1575  (void) SetImageProgress(image,RollImageTag,2,3);
1576  status&=CopyImageRegion(roll_image,image,image->columns-offset.x,image->rows-
1577  offset.y,0,0,offset.x,offset.y,exception);
1578  (void) SetImageProgress(image,RollImageTag,3,3);
1579  roll_image->type=image->type;
1580  if (status == MagickFalse)
1581  roll_image=DestroyImage(roll_image);
1582  return(roll_image);
1583 }
1584 
1585 /*
1586 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1587 % %
1588 % %
1589 % %
1590 % S h a v e I m a g e %
1591 % %
1592 % %
1593 % %
1594 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1595 %
1596 % ShaveImage() shaves pixels from the image edges. It allocates the memory
1597 % necessary for the new Image structure and returns a pointer to the new
1598 % image.
1599 %
1600 % The format of the ShaveImage method is:
1601 %
1602 % Image *ShaveImage(const Image *image,const RectangleInfo *shave_info,
1603 % ExceptionInfo *exception)
1604 %
1605 % A description of each parameter follows:
1606 %
1607 % o shave_image: Method ShaveImage returns a pointer to the shaved
1608 % image. A null image is returned if there is a memory shortage or
1609 % if the image width or height is zero.
1610 %
1611 % o image: the image.
1612 %
1613 % o shave_info: Specifies a pointer to a RectangleInfo which defines the
1614 % region of the image to crop.
1615 %
1616 % o exception: return any errors or warnings in this structure.
1617 %
1618 */
1620  const RectangleInfo *shave_info,ExceptionInfo *exception)
1621 {
1622  Image
1623  *shave_image;
1624 
1626  geometry;
1627 
1628  assert(image != (const Image *) NULL);
1629  assert(image->signature == MagickCoreSignature);
1630  if (image->debug != MagickFalse)
1631  (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
1632  if (((2*shave_info->width) >= image->columns) ||
1633  ((2*shave_info->height) >= image->rows))
1634  ThrowImageException(OptionWarning,"GeometryDoesNotContainImage");
1635  SetGeometry(image,&geometry);
1636  geometry.width-=2*shave_info->width;
1637  geometry.height-=2*shave_info->height;
1638  geometry.x=(ssize_t) shave_info->width+image->page.x;
1639  geometry.y=(ssize_t) shave_info->height+image->page.y;
1640  shave_image=CropImage(image,&geometry,exception);
1641  if (shave_image == (Image *) NULL)
1642  return((Image *) NULL);
1643  shave_image->page.width-=2*shave_info->width;
1644  shave_image->page.height-=2*shave_info->height;
1645  shave_image->page.x-=(ssize_t) shave_info->width;
1646  shave_image->page.y-=(ssize_t) shave_info->height;
1647  return(shave_image);
1648 }
1649 
1650 /*
1651 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1652 % %
1653 % %
1654 % %
1655 % S p l i c e I m a g e %
1656 % %
1657 % %
1658 % %
1659 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1660 %
1661 % SpliceImage() splices a solid color into the image as defined by the
1662 % geometry.
1663 %
1664 % The format of the SpliceImage method is:
1665 %
1666 % Image *SpliceImage(const Image *image,const RectangleInfo *geometry,
1667 % ExceptionInfo *exception)
1668 %
1669 % A description of each parameter follows:
1670 %
1671 % o image: the image.
1672 %
1673 % o geometry: Define the region of the image to splice with members
1674 % x, y, width, and height.
1675 %
1676 % o exception: return any errors or warnings in this structure.
1677 %
1678 */
1680  const RectangleInfo *geometry,ExceptionInfo *exception)
1681 {
1682 #define SpliceImageTag "Splice/Image"
1683 
1684  CacheView
1685  *image_view,
1686  *splice_view;
1687 
1688  Image
1689  *splice_image;
1690 
1692  status;
1693 
1695  progress;
1696 
1698  splice_geometry;
1699 
1700  ssize_t
1701  columns,
1702  y;
1703 
1704  /*
1705  Allocate splice image.
1706  */
1707  assert(image != (const Image *) NULL);
1708  assert(image->signature == MagickCoreSignature);
1709  if (image->debug != MagickFalse)
1710  (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
1711  assert(geometry != (const RectangleInfo *) NULL);
1712  assert(exception != (ExceptionInfo *) NULL);
1713  assert(exception->signature == MagickCoreSignature);
1714  splice_geometry=(*geometry);
1715  splice_image=CloneImage(image,image->columns+splice_geometry.width,
1716  image->rows+splice_geometry.height,MagickTrue,exception);
1717  if (splice_image == (Image *) NULL)
1718  return((Image *) NULL);
1719  if (SetImageStorageClass(splice_image,DirectClass,exception) == MagickFalse)
1720  {
1721  splice_image=DestroyImage(splice_image);
1722  return((Image *) NULL);
1723  }
1724  if ((IsPixelInfoGray(&splice_image->background_color) == MagickFalse) &&
1725  (IsGrayColorspace(splice_image->colorspace) != MagickFalse))
1726  (void) SetImageColorspace(splice_image,sRGBColorspace,exception);
1727  if ((splice_image->background_color.alpha_trait != UndefinedPixelTrait) &&
1728  (splice_image->alpha_trait == UndefinedPixelTrait))
1729  (void) SetImageAlpha(splice_image,OpaqueAlpha,exception);
1730  (void) SetImageBackgroundColor(splice_image,exception);
1731  /*
1732  Respect image geometry.
1733  */
1734  switch (image->gravity)
1735  {
1736  default:
1737  case UndefinedGravity:
1738  case NorthWestGravity:
1739  break;
1740  case NorthGravity:
1741  {
1742  splice_geometry.x+=(ssize_t) splice_geometry.width/2;
1743  break;
1744  }
1745  case NorthEastGravity:
1746  {
1747  splice_geometry.x+=(ssize_t) splice_geometry.width;
1748  break;
1749  }
1750  case WestGravity:
1751  {
1752  splice_geometry.y+=(ssize_t) splice_geometry.width/2;
1753  break;
1754  }
1755  case CenterGravity:
1756  {
1757  splice_geometry.x+=(ssize_t) splice_geometry.width/2;
1758  splice_geometry.y+=(ssize_t) splice_geometry.height/2;
1759  break;
1760  }
1761  case EastGravity:
1762  {
1763  splice_geometry.x+=(ssize_t) splice_geometry.width;
1764  splice_geometry.y+=(ssize_t) splice_geometry.height/2;
1765  break;
1766  }
1767  case SouthWestGravity:
1768  {
1769  splice_geometry.y+=(ssize_t) splice_geometry.height;
1770  break;
1771  }
1772  case SouthGravity:
1773  {
1774  splice_geometry.x+=(ssize_t) splice_geometry.width/2;
1775  splice_geometry.y+=(ssize_t) splice_geometry.height;
1776  break;
1777  }
1778  case SouthEastGravity:
1779  {
1780  splice_geometry.x+=(ssize_t) splice_geometry.width;
1781  splice_geometry.y+=(ssize_t) splice_geometry.height;
1782  break;
1783  }
1784  }
1785  /*
1786  Splice image.
1787  */
1788  status=MagickTrue;
1789  progress=0;
1790  columns=MagickMin(splice_geometry.x,(ssize_t) splice_image->columns);
1791  image_view=AcquireVirtualCacheView(image,exception);
1792  splice_view=AcquireAuthenticCacheView(splice_image,exception);
1793 #if defined(MAGICKCORE_OPENMP_SUPPORT)
1794  #pragma omp parallel for schedule(static) shared(progress,status) \
1795  magick_number_threads(image,splice_image,splice_geometry.y,1)
1796 #endif
1797  for (y=0; y < (ssize_t) splice_geometry.y; y++)
1798  {
1799  register const Quantum
1800  *magick_restrict p;
1801 
1802  register ssize_t
1803  x;
1804 
1805  register Quantum
1806  *magick_restrict q;
1807 
1808  if (status == MagickFalse)
1809  continue;
1810  p=GetCacheViewVirtualPixels(image_view,0,y,splice_image->columns,1,
1811  exception);
1812  q=QueueCacheViewAuthenticPixels(splice_view,0,y,splice_image->columns,1,
1813  exception);
1814  if ((p == (const Quantum *) NULL) || (q == (Quantum *) NULL))
1815  {
1816  status=MagickFalse;
1817  continue;
1818  }
1819  for (x=0; x < columns; x++)
1820  {
1821  register ssize_t
1822  i;
1823 
1824  for (i=0; i < (ssize_t) GetPixelChannels(image); i++)
1825  {
1826  PixelChannel channel = GetPixelChannelChannel(image,i);
1827  PixelTrait traits = GetPixelChannelTraits(image,channel);
1828  PixelTrait splice_traits=GetPixelChannelTraits(splice_image,channel);
1829  if ((traits == UndefinedPixelTrait) ||
1830  (splice_traits == UndefinedPixelTrait))
1831  continue;
1832  SetPixelChannel(splice_image,channel,p[i],q);
1833  }
1834  SetPixelRed(splice_image,GetPixelRed(image,p),q);
1835  SetPixelGreen(splice_image,GetPixelGreen(image,p),q);
1836  SetPixelBlue(splice_image,GetPixelBlue(image,p),q);
1837  SetPixelAlpha(splice_image,GetPixelAlpha(image,p),q);
1838  p+=GetPixelChannels(image);
1839  q+=GetPixelChannels(splice_image);
1840  }
1841  for ( ; x < (ssize_t) (splice_geometry.x+splice_geometry.width); x++)
1842  q+=GetPixelChannels(splice_image);
1843  for ( ; x < (ssize_t) splice_image->columns; x++)
1844  {
1845  register ssize_t
1846  i;
1847 
1848  for (i=0; i < (ssize_t) GetPixelChannels(image); i++)
1849  {
1850  PixelChannel channel = GetPixelChannelChannel(image,i);
1851  PixelTrait traits = GetPixelChannelTraits(image,channel);
1852  PixelTrait splice_traits=GetPixelChannelTraits(splice_image,channel);
1853  if ((traits == UndefinedPixelTrait) ||
1854  (splice_traits == UndefinedPixelTrait))
1855  continue;
1856  SetPixelChannel(splice_image,channel,p[i],q);
1857  }
1858  SetPixelRed(splice_image,GetPixelRed(image,p),q);
1859  SetPixelGreen(splice_image,GetPixelGreen(image,p),q);
1860  SetPixelBlue(splice_image,GetPixelBlue(image,p),q);
1861  SetPixelAlpha(splice_image,GetPixelAlpha(image,p),q);
1862  p+=GetPixelChannels(image);
1863  q+=GetPixelChannels(splice_image);
1864  }
1865  if (SyncCacheViewAuthenticPixels(splice_view,exception) == MagickFalse)
1866  status=MagickFalse;
1867  if (image->progress_monitor != (MagickProgressMonitor) NULL)
1868  {
1870  proceed;
1871 
1872 #if defined(MAGICKCORE_OPENMP_SUPPORT)
1873  #pragma omp atomic
1874 #endif
1875  progress++;
1876  proceed=SetImageProgress(image,SpliceImageTag,progress,
1877  splice_image->rows);
1878  if (proceed == MagickFalse)
1879  status=MagickFalse;
1880  }
1881  }
1882 #if defined(MAGICKCORE_OPENMP_SUPPORT)
1883  #pragma omp parallel for schedule(static) shared(progress,status) \
1884  magick_number_threads(image,splice_image,splice_image->rows,2)
1885 #endif
1886  for (y=(ssize_t) (splice_geometry.y+splice_geometry.height);
1887  y < (ssize_t) splice_image->rows; y++)
1888  {
1889  register const Quantum
1890  *magick_restrict p;
1891 
1892  register ssize_t
1893  x;
1894 
1895  register Quantum
1896  *magick_restrict q;
1897 
1898  if (status == MagickFalse)
1899  continue;
1900  if ((y < 0) || (y >= (ssize_t)splice_image->rows))
1901  continue;
1902  p=GetCacheViewVirtualPixels(image_view,0,y-(ssize_t) splice_geometry.height,
1903  splice_image->columns,1,exception);
1904  q=QueueCacheViewAuthenticPixels(splice_view,0,y,splice_image->columns,1,
1905  exception);
1906  if ((p == (const Quantum *) NULL) || (q == (Quantum *) NULL))
1907  {
1908  status=MagickFalse;
1909  continue;
1910  }
1911  for (x=0; x < columns; x++)
1912  {
1913  register ssize_t
1914  i;
1915 
1916  for (i=0; i < (ssize_t) GetPixelChannels(image); i++)
1917  {
1918  PixelChannel channel = GetPixelChannelChannel(image,i);
1919  PixelTrait traits = GetPixelChannelTraits(image,channel);
1920  PixelTrait splice_traits=GetPixelChannelTraits(splice_image,channel);
1921  if ((traits == UndefinedPixelTrait) ||
1922  (splice_traits == UndefinedPixelTrait))
1923  continue;
1924  SetPixelChannel(splice_image,channel,p[i],q);
1925  }
1926  SetPixelRed(splice_image,GetPixelRed(image,p),q);
1927  SetPixelGreen(splice_image,GetPixelGreen(image,p),q);
1928  SetPixelBlue(splice_image,GetPixelBlue(image,p),q);
1929  SetPixelAlpha(splice_image,GetPixelAlpha(image,p),q);
1930  p+=GetPixelChannels(image);
1931  q+=GetPixelChannels(splice_image);
1932  }
1933  for ( ; x < (ssize_t) (splice_geometry.x+splice_geometry.width); x++)
1934  q+=GetPixelChannels(splice_image);
1935  for ( ; x < (ssize_t) splice_image->columns; x++)
1936  {
1937  register ssize_t
1938  i;
1939 
1940  for (i=0; i < (ssize_t) GetPixelChannels(image); i++)
1941  {
1942  PixelChannel channel = GetPixelChannelChannel(image,i);
1943  PixelTrait traits = GetPixelChannelTraits(image,channel);
1944  PixelTrait splice_traits=GetPixelChannelTraits(splice_image,channel);
1945  if ((traits == UndefinedPixelTrait) ||
1946  (splice_traits == UndefinedPixelTrait))
1947  continue;
1948  SetPixelChannel(splice_image,channel,p[i],q);
1949  }
1950  SetPixelRed(splice_image,GetPixelRed(image,p),q);
1951  SetPixelGreen(splice_image,GetPixelGreen(image,p),q);
1952  SetPixelBlue(splice_image,GetPixelBlue(image,p),q);
1953  SetPixelAlpha(splice_image,GetPixelAlpha(image,p),q);
1954  p+=GetPixelChannels(image);
1955  q+=GetPixelChannels(splice_image);
1956  }
1957  if (SyncCacheViewAuthenticPixels(splice_view,exception) == MagickFalse)
1958  status=MagickFalse;
1959  if (image->progress_monitor != (MagickProgressMonitor) NULL)
1960  {
1962  proceed;
1963 
1964 #if defined(MAGICKCORE_OPENMP_SUPPORT)
1965  #pragma omp atomic
1966 #endif
1967  progress++;
1968  proceed=SetImageProgress(image,SpliceImageTag,progress,
1969  splice_image->rows);
1970  if (proceed == MagickFalse)
1971  status=MagickFalse;
1972  }
1973  }
1974  splice_view=DestroyCacheView(splice_view);
1975  image_view=DestroyCacheView(image_view);
1976  if (status == MagickFalse)
1977  splice_image=DestroyImage(splice_image);
1978  return(splice_image);
1979 }
1980 
1981 /*
1982 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1983 % %
1984 % %
1985 % %
1986 % T r a n s f o r m I m a g e %
1987 % %
1988 % %
1989 % %
1990 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1991 %
1992 % TransformImage() is a convenience method that behaves like ResizeImage() or
1993 % CropImage() but accepts scaling and/or cropping information as a region
1994 % geometry specification. If the operation fails, the original image handle
1995 % is left as is.
1996 %
1997 % This should only be used for single images.
1998 %
1999 % This function destroys what it assumes to be a single image list.
2000 % If the input image is part of a larger list, all other images in that list
2001 % will be simply 'lost', not destroyed.
2002 %
2003 % Also if the crop generates a list of images only the first image is resized.
2004 % And finally if the crop succeeds and the resize failed, you will get a
2005 % cropped image, as well as a 'false' or 'failed' report.
2006 %
2007 % This function and should probably be deprecated in favor of direct calls
2008 % to CropImageToTiles() or ResizeImage(), as appropriate.
2009 %
2010 % The format of the TransformImage method is:
2011 %
2012 % MagickBooleanType TransformImage(Image **image,const char *crop_geometry,
2013 % const char *image_geometry,ExceptionInfo *exception)
2014 %
2015 % A description of each parameter follows:
2016 %
2017 % o image: the image The transformed image is returned as this parameter.
2018 %
2019 % o crop_geometry: A crop geometry string. This geometry defines a
2020 % subregion of the image to crop.
2021 %
2022 % o image_geometry: An image geometry string. This geometry defines the
2023 % final size of the image.
2024 %
2025 % o exception: return any errors or warnings in this structure.
2026 %
2027 */
2029  const char *crop_geometry,const char *image_geometry,ExceptionInfo *exception)
2030 {
2031  Image
2032  *resize_image,
2033  *transform_image;
2034 
2036  geometry;
2037 
2038  assert(image != (Image **) NULL);
2039  assert((*image)->signature == MagickCoreSignature);
2040  if ((*image)->debug != MagickFalse)
2041  (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",(*image)->filename);
2042  transform_image=(*image);
2043  if (crop_geometry != (const char *) NULL)
2044  {
2045  Image
2046  *crop_image;
2047 
2048  /*
2049  Crop image to a user specified size.
2050  */
2051  crop_image=CropImageToTiles(*image,crop_geometry,exception);
2052  if (crop_image == (Image *) NULL)
2053  transform_image=CloneImage(*image,0,0,MagickTrue,exception);
2054  else
2055  {
2056  transform_image=DestroyImage(transform_image);
2057  transform_image=GetFirstImageInList(crop_image);
2058  }
2059  *image=transform_image;
2060  }
2061  if (image_geometry == (const char *) NULL)
2062  return(MagickTrue);
2063  /*
2064  Scale image to a user specified size.
2065  */
2066  (void) ParseRegionGeometry(transform_image,image_geometry,&geometry,
2067  exception);
2068  if ((transform_image->columns == geometry.width) &&
2069  (transform_image->rows == geometry.height))
2070  return(MagickTrue);
2071  resize_image=ResizeImage(transform_image,geometry.width,geometry.height,
2072  transform_image->filter,exception);
2073  if (resize_image == (Image *) NULL)
2074  return(MagickFalse);
2075  transform_image=DestroyImage(transform_image);
2076  transform_image=resize_image;
2077  *image=transform_image;
2078  return(MagickTrue);
2079 }
2080 
2081 /*
2082 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2083 % %
2084 % %
2085 % %
2086 % T r a n s p o s e I m a g e %
2087 % %
2088 % %
2089 % %
2090 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2091 %
2092 % TransposeImage() creates a horizontal mirror image by reflecting the pixels
2093 % around the central y-axis while rotating them by 90 degrees.
2094 %
2095 % The format of the TransposeImage method is:
2096 %
2097 % Image *TransposeImage(const Image *image,ExceptionInfo *exception)
2098 %
2099 % A description of each parameter follows:
2100 %
2101 % o image: the image.
2102 %
2103 % o exception: return any errors or warnings in this structure.
2104 %
2105 */
2107 {
2108 #define TransposeImageTag "Transpose/Image"
2109 
2110  CacheView
2111  *image_view,
2112  *transpose_view;
2113 
2114  Image
2115  *transpose_image;
2116 
2118  status;
2119 
2121  progress;
2122 
2124  page;
2125 
2126  ssize_t
2127  y;
2128 
2129  assert(image != (const Image *) NULL);
2130  assert(image->signature == MagickCoreSignature);
2131  if (image->debug != MagickFalse)
2132  (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
2133  assert(exception != (ExceptionInfo *) NULL);
2134  assert(exception->signature == MagickCoreSignature);
2135  transpose_image=CloneImage(image,image->rows,image->columns,MagickTrue,
2136  exception);
2137  if (transpose_image == (Image *) NULL)
2138  return((Image *) NULL);
2139  /*
2140  Transpose image.
2141  */
2142  status=MagickTrue;
2143  progress=0;
2144  image_view=AcquireVirtualCacheView(image,exception);
2145  transpose_view=AcquireAuthenticCacheView(transpose_image,exception);
2146 #if defined(MAGICKCORE_OPENMP_SUPPORT)
2147  #pragma omp parallel for schedule(static) shared(progress,status) \
2148  magick_number_threads(image,transpose_image,image->rows,1)
2149 #endif
2150  for (y=0; y < (ssize_t) image->rows; y++)
2151  {
2152  register const Quantum
2153  *magick_restrict p;
2154 
2155  register Quantum
2156  *magick_restrict q;
2157 
2158  register ssize_t
2159  x;
2160 
2161  if (status == MagickFalse)
2162  continue;
2163  p=GetCacheViewVirtualPixels(image_view,0,(ssize_t) image->rows-y-1,
2164  image->columns,1,exception);
2165  q=QueueCacheViewAuthenticPixels(transpose_view,(ssize_t) (image->rows-y-1),
2166  0,1,transpose_image->rows,exception);
2167  if ((p == (const Quantum *) NULL) || (q == (Quantum *) NULL))
2168  {
2169  status=MagickFalse;
2170  continue;
2171  }
2172  for (x=0; x < (ssize_t) image->columns; x++)
2173  {
2174  register ssize_t
2175  i;
2176 
2177  for (i=0; i < (ssize_t) GetPixelChannels(image); i++)
2178  {
2179  PixelChannel channel = GetPixelChannelChannel(image,i);
2180  PixelTrait traits = GetPixelChannelTraits(image,channel);
2181  PixelTrait transpose_traits=GetPixelChannelTraits(transpose_image,
2182  channel);
2183  if ((traits == UndefinedPixelTrait) ||
2184  (transpose_traits == UndefinedPixelTrait))
2185  continue;
2186  SetPixelChannel(transpose_image,channel,p[i],q);
2187  }
2188  p+=GetPixelChannels(image);
2189  q+=GetPixelChannels(transpose_image);
2190  }
2191  if (SyncCacheViewAuthenticPixels(transpose_view,exception) == MagickFalse)
2192  status=MagickFalse;
2193  if (image->progress_monitor != (MagickProgressMonitor) NULL)
2194  {
2196  proceed;
2197 
2198 #if defined(MAGICKCORE_OPENMP_SUPPORT)
2199  #pragma omp atomic
2200 #endif
2201  progress++;
2202  proceed=SetImageProgress(image,TransposeImageTag,progress,image->rows);
2203  if (proceed == MagickFalse)
2204  status=MagickFalse;
2205  }
2206  }
2207  transpose_view=DestroyCacheView(transpose_view);
2208  image_view=DestroyCacheView(image_view);
2209  transpose_image->type=image->type;
2210  page=transpose_image->page;
2211  Swap(page.width,page.height);
2212  Swap(page.x,page.y);
2213  transpose_image->page=page;
2214  if (status == MagickFalse)
2215  transpose_image=DestroyImage(transpose_image);
2216  return(transpose_image);
2217 }
2218 
2219 /*
2220 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2221 % %
2222 % %
2223 % %
2224 % T r a n s v e r s e I m a g e %
2225 % %
2226 % %
2227 % %
2228 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2229 %
2230 % TransverseImage() creates a vertical mirror image by reflecting the pixels
2231 % around the central x-axis while rotating them by 270 degrees.
2232 %
2233 % The format of the TransverseImage method is:
2234 %
2235 % Image *TransverseImage(const Image *image,ExceptionInfo *exception)
2236 %
2237 % A description of each parameter follows:
2238 %
2239 % o image: the image.
2240 %
2241 % o exception: return any errors or warnings in this structure.
2242 %
2243 */
2245 {
2246 #define TransverseImageTag "Transverse/Image"
2247 
2248  CacheView
2249  *image_view,
2250  *transverse_view;
2251 
2252  Image
2253  *transverse_image;
2254 
2256  status;
2257 
2259  progress;
2260 
2262  page;
2263 
2264  ssize_t
2265  y;
2266 
2267  assert(image != (const Image *) NULL);
2268  assert(image->signature == MagickCoreSignature);
2269  if (image->debug != MagickFalse)
2270  (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
2271  assert(exception != (ExceptionInfo *) NULL);
2272  assert(exception->signature == MagickCoreSignature);
2273  transverse_image=CloneImage(image,image->rows,image->columns,MagickTrue,
2274  exception);
2275  if (transverse_image == (Image *) NULL)
2276  return((Image *) NULL);
2277  /*
2278  Transverse image.
2279  */
2280  status=MagickTrue;
2281  progress=0;
2282  image_view=AcquireVirtualCacheView(image,exception);
2283  transverse_view=AcquireAuthenticCacheView(transverse_image,exception);
2284 #if defined(MAGICKCORE_OPENMP_SUPPORT)
2285  #pragma omp parallel for schedule(static) shared(progress,status) \
2286  magick_number_threads(image,transverse_image,image->rows,1)
2287 #endif
2288  for (y=0; y < (ssize_t) image->rows; y++)
2289  {
2291  sync;
2292 
2293  register const Quantum
2294  *magick_restrict p;
2295 
2296  register Quantum
2297  *magick_restrict q;
2298 
2299  register ssize_t
2300  x;
2301 
2302  if (status == MagickFalse)
2303  continue;
2304  p=GetCacheViewVirtualPixels(image_view,0,y,image->columns,1,exception);
2305  q=QueueCacheViewAuthenticPixels(transverse_view,(ssize_t) (image->rows-y-1),
2306  0,1,transverse_image->rows,exception);
2307  if ((p == (const Quantum *) NULL) || (q == (Quantum *) NULL))
2308  {
2309  status=MagickFalse;
2310  continue;
2311  }
2312  q+=GetPixelChannels(transverse_image)*image->columns;
2313  for (x=0; x < (ssize_t) image->columns; x++)
2314  {
2315  register ssize_t
2316  i;
2317 
2318  q-=GetPixelChannels(transverse_image);
2319  for (i=0; i < (ssize_t) GetPixelChannels(image); i++)
2320  {
2321  PixelChannel channel = GetPixelChannelChannel(image,i);
2322  PixelTrait traits = GetPixelChannelTraits(image,channel);
2323  PixelTrait transverse_traits=GetPixelChannelTraits(transverse_image,
2324  channel);
2325  if ((traits == UndefinedPixelTrait) ||
2326  (transverse_traits == UndefinedPixelTrait))
2327  continue;
2328  SetPixelChannel(transverse_image,channel,p[i],q);
2329  }
2330  p+=GetPixelChannels(image);
2331  }
2332  sync=SyncCacheViewAuthenticPixels(transverse_view,exception);
2333  if (sync == MagickFalse)
2334  status=MagickFalse;
2335  if (image->progress_monitor != (MagickProgressMonitor) NULL)
2336  {
2338  proceed;
2339 
2340 #if defined(MAGICKCORE_OPENMP_SUPPORT)
2341  #pragma omp atomic
2342 #endif
2343  progress++;
2344  proceed=SetImageProgress(image,TransverseImageTag,progress,image->rows);
2345  if (proceed == MagickFalse)
2346  status=MagickFalse;
2347  }
2348  }
2349  transverse_view=DestroyCacheView(transverse_view);
2350  image_view=DestroyCacheView(image_view);
2351  transverse_image->type=image->type;
2352  page=transverse_image->page;
2353  Swap(page.width,page.height);
2354  Swap(page.x,page.y);
2355  if (page.width != 0)
2356  page.x=(ssize_t) (page.width-transverse_image->columns-page.x);
2357  if (page.height != 0)
2358  page.y=(ssize_t) (page.height-transverse_image->rows-page.y);
2359  transverse_image->page=page;
2360  if (status == MagickFalse)
2361  transverse_image=DestroyImage(transverse_image);
2362  return(transverse_image);
2363 }
2364 
2365 /*
2366 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2367 % %
2368 % %
2369 % %
2370 % T r i m I m a g e %
2371 % %
2372 % %
2373 % %
2374 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2375 %
2376 % TrimImage() trims pixels from the image edges. It allocates the memory
2377 % necessary for the new Image structure and returns a pointer to the new
2378 % image.
2379 %
2380 % The format of the TrimImage method is:
2381 %
2382 % Image *TrimImage(const Image *image,ExceptionInfo *exception)
2383 %
2384 % A description of each parameter follows:
2385 %
2386 % o image: the image.
2387 %
2388 % o exception: return any errors or warnings in this structure.
2389 %
2390 */
2392 {
2394  geometry;
2395 
2396  assert(image != (const Image *) NULL);
2397  assert(image->signature == MagickCoreSignature);
2398  if (image->debug != MagickFalse)
2399  (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
2400  geometry=GetImageBoundingBox(image,exception);
2401  if ((geometry.width == 0) || (geometry.height == 0))
2402  {
2403  Image
2404  *crop_image;
2405 
2406  crop_image=CloneImage(image,1,1,MagickTrue,exception);
2407  if (crop_image == (Image *) NULL)
2408  return((Image *) NULL);
2410  crop_image->alpha_trait=BlendPixelTrait;
2411  (void) SetImageBackgroundColor(crop_image,exception);
2412  crop_image->page=image->page;
2413  crop_image->page.x=(-1);
2414  crop_image->page.y=(-1);
2415  return(crop_image);
2416  }
2417  geometry.x+=image->page.x;
2418  geometry.y+=image->page.y;
2419  return(CropImage(image,&geometry,exception));
2420 }
size_t rows
Definition: image.h:172
#define magick_restrict
Definition: MagickCore.h:41
MagickExport Image * ResizeImage(const Image *image, const size_t columns, const size_t rows, const FilterType filter, ExceptionInfo *exception)
Definition: resize.c:2865
MagickDoubleType MagickRealType
Definition: magick-type.h:120
MagickExport CacheView * DestroyCacheView(CacheView *cache_view)
Definition: cache-view.c:252
MagickExport Image * FlipImage(const Image *image, ExceptionInfo *exception)
Definition: transform.c:1174
#define TransparentAlpha
Definition: image.h:26
DisposeType dispose
Definition: image.h:237
#define RollImageTag
MagickProgressMonitor progress_monitor
Definition: image.h:303
ImageType type
Definition: image.h:264
static Quantum GetPixelAlpha(const Image *magick_restrict image, const Quantum *magick_restrict pixel)
FilterType filter
Definition: image.h:219
PixelTrait alpha_trait
Definition: pixel.h:179
ssize_t y
Definition: geometry.h:116
static Quantum GetPixelRed(const Image *magick_restrict image, const Quantum *magick_restrict pixel)
MagickExport Image * ConsolidateCMYKImages(const Image *images, ExceptionInfo *exception)
Definition: transform.c:414
OrientationType
Definition: image.h:76
MagickExport Image * FlopImage(const Image *image, ExceptionInfo *exception)
Definition: transform.c:1309
MagickExport Image * TransposeImage(const Image *image, ExceptionInfo *exception)
Definition: transform.c:2106
size_t signature
Definition: exception.h:123
#define OpaqueAlpha
Definition: image.h:25
MagickExport MagickBooleanType SetImageAlpha(Image *image, const Quantum alpha, ExceptionInfo *exception)
Definition: image.c:2339
static PixelTrait GetPixelChannelTraits(const Image *magick_restrict image, const PixelChannel channel)
static MagickBooleanType IsGrayColorspace(const ColorspaceType colorspace)
MagickExport Image * TransverseImage(const Image *image, ExceptionInfo *exception)
Definition: transform.c:2244
MagickExport const Quantum * GetCacheViewVirtualPixels(const CacheView *cache_view, const ssize_t x, const ssize_t y, const size_t columns, const size_t rows, ExceptionInfo *exception)
Definition: cache-view.c:651
ssize_t offset
Definition: token.c:69
MagickRealType alpha
Definition: pixel.h:191
#define TransposeImageTag
MagickExport MagickBooleanType CompositeImage(Image *image, const Image *composite, const CompositeOperator compose, const MagickBooleanType clip_to_self, const ssize_t x_offset, const ssize_t y_offset, ExceptionInfo *exception)
Definition: composite.c:528
size_t width
Definition: geometry.h:130
#define ChopImageTag
MagickExport Image * CropImageToTiles(const Image *image, const char *crop_geometry, ExceptionInfo *exception)
Definition: transform.c:778
Definition: log.h:52
ssize_t MagickOffsetType
Definition: magick-type.h:129
Definition: image.h:151
MagickExport Image * CropImage(const Image *image, const RectangleInfo *geometry, ExceptionInfo *exception)
Definition: transform.c:535
double x
Definition: geometry.h:123
#define MagickCoreSignature
MagickExport Quantum * GetCacheViewAuthenticPixels(CacheView *cache_view, const ssize_t x, const ssize_t y, const size_t columns, const size_t rows, ExceptionInfo *exception)
Definition: cache-view.c:299
MagickExport Image * GetFirstImageInList(const Image *images)
Definition: list.c:561
MagickBooleanType
Definition: magick-type.h:158
MagickExport Image * NewImageList(void)
Definition: list.c:938
unsigned int MagickStatusType
Definition: magick-type.h:121
double y
Definition: geometry.h:123
MagickExport Image * SpliceImage(const Image *image, const RectangleInfo *geometry, ExceptionInfo *exception)
Definition: transform.c:1679
GravityType gravity
Definition: image.h:231
RectangleInfo page
Definition: image.h:212
MagickExport Image * RollImage(const Image *image, const ssize_t x_offset, const ssize_t y_offset, ExceptionInfo *exception)
Definition: transform.c:1526
static Quantum GetPixelGreen(const Image *magick_restrict image, const Quantum *magick_restrict pixel)
PixelTrait alpha_trait
Definition: image.h:280
MagickExport Quantum * QueueCacheViewAuthenticPixels(CacheView *cache_view, const ssize_t x, const ssize_t y, const size_t columns, const size_t rows, ExceptionInfo *exception)
Definition: cache-view.c:977
MagickExport MagickBooleanType ThrowMagickException(ExceptionInfo *exception, const char *module, const char *function, const size_t line, const ExceptionType severity, const char *tag, const char *format,...)
Definition: exception.c:1145
MagickExport MagickBooleanType LogMagickEvent(const LogEventType type, const char *module, const char *function, const size_t line, const char *format,...)
Definition: log.c:1403
MagickExport Image * RotateImage(const Image *image, const double degrees, ExceptionInfo *exception)
Definition: distort.c:2853
MagickExport MagickBooleanType SetImageBackgroundColor(Image *image, ExceptionInfo *exception)
Definition: image.c:2417
size_t signature
Definition: image.h:354
size_t columns
Definition: image.h:172
MagickExport Image * ExcerptImage(const Image *image, const RectangleInfo *geometry, ExceptionInfo *exception)
Definition: transform.c:975
ssize_t x
Definition: geometry.h:134
size_t height
Definition: geometry.h:130
static void SetPixelMagenta(const Image *magick_restrict image, const Quantum magenta, Quantum *magick_restrict pixel)
#define FlipImageTag
static void SetPixelBlue(const Image *magick_restrict image, const Quantum blue, Quantum *magick_restrict pixel)
MagickExport MagickBooleanType SetImageStorageClass(Image *image, const ClassType storage_class, ExceptionInfo *exception)
Definition: image.c:2617
PixelChannel
Definition: pixel.h:67
#define SpliceImageTag
static size_t GetPixelChannels(const Image *magick_restrict image)
MagickExport Image * ChopImage(const Image *image, const RectangleInfo *chop_info, ExceptionInfo *exception)
Definition: transform.c:188
char filename[MagickPathExtent]
Definition: image.h:319
#define GetMagickModule()
Definition: log.h:28
static void SetPixelCyan(const Image *magick_restrict image, const Quantum cyan, Quantum *magick_restrict pixel)
#define ThrowImageException(severity, tag)
static Quantum ClampToQuantum(const MagickRealType value)
Definition: quantum.h:84
static PixelChannel GetPixelChannelChannel(const Image *magick_restrict image, const ssize_t offset)
MagickExport CacheView * AcquireVirtualCacheView(const Image *image, ExceptionInfo *exception)
Definition: cache-view.c:149
MagickExport void ClearMagickException(ExceptionInfo *exception)
Definition: exception.c:164
#define TransverseImageTag
unsigned short Quantum
Definition: magick-type.h:82
static MagickBooleanType IsPixelInfoGray(const PixelInfo *magick_restrict pixel)
#define FlopImageTag
MagickExport RectangleInfo GetImageBoundingBox(const Image *image, ExceptionInfo *exception)
Definition: attribute.c:380
MagickExport MagickBooleanType SetImageColorspace(Image *image, const ColorspaceType colorspace, ExceptionInfo *exception)
Definition: colorspace.c:1135
MagickExport Image * ExtentImage(const Image *image, const RectangleInfo *geometry, ExceptionInfo *exception)
Definition: transform.c:1115
MagickExport MagickStatusType ParseGravityGeometry(const Image *image, const char *geometry, RectangleInfo *region_info, ExceptionInfo *exception)
Definition: geometry.c:1232
MagickExport Image * GetNextImageInList(const Image *images)
Definition: list.c:771
MagickExport Image * ShaveImage(const Image *image, const RectangleInfo *shave_info, ExceptionInfo *exception)
Definition: transform.c:1619
#define CropImageTag
static void SetPixelChannel(const Image *magick_restrict image, const PixelChannel channel, const Quantum quantum, Quantum *magick_restrict pixel)
MagickExport void AppendImageToList(Image **images, const Image *append)
Definition: list.c:78
static void SetPixelYellow(const Image *magick_restrict image, const Quantum yellow, Quantum *magick_restrict pixel)
#define MagickMin(x, y)
Definition: image-private.h:27
static void SetPixelAlpha(const Image *magick_restrict image, const Quantum alpha, Quantum *magick_restrict pixel)
MagickExport void SetGeometry(const Image *image, RectangleInfo *geometry)
Definition: geometry.c:1686
ssize_t x
Definition: geometry.h:116
static double MagickRound(double x)
Definition: transform.c:768
MagickBooleanType(* MagickProgressMonitor)(const char *, const MagickOffsetType, const MagickSizeType, void *)
Definition: monitor.h:26
#define Swap(x, y)
Definition: studio.h:345
CompositeOperator compose
Definition: image.h:234
MagickExport Image * AutoOrientImage(const Image *image, const OrientationType orientation, ExceptionInfo *exception)
Definition: transform.c:99
static void SetPixelRed(const Image *magick_restrict image, const Quantum red, Quantum *magick_restrict pixel)
#define MagickPrivate
MagickExport Image * TrimImage(const Image *image, ExceptionInfo *exception)
Definition: transform.c:2391
static MagickBooleanType CopyImageRegion(Image *destination, const Image *source, const size_t columns, const size_t rows, const ssize_t sx, const ssize_t sy, const ssize_t dx, const ssize_t dy, ExceptionInfo *exception)
Definition: transform.c:1450
#define MagickExport
MagickExport MagickBooleanType SyncCacheViewAuthenticPixels(CacheView *magick_restrict cache_view, ExceptionInfo *exception)
Definition: cache-view.c:1100
OrientationType orientation
Definition: image.h:166
ssize_t y
Definition: geometry.h:134
MagickExport CacheView * AcquireAuthenticCacheView(const Image *image, ExceptionInfo *exception)
Definition: cache-view.c:112
static void SetPixelBlack(const Image *magick_restrict image, const Quantum black, Quantum *magick_restrict pixel)
static Quantum GetPixelBlue(const Image *magick_restrict image, const Quantum *magick_restrict pixel)
PixelTrait
Definition: pixel.h:135
MagickExport MagickRealType GetPixelIntensity(const Image *magick_restrict image, const Quantum *magick_restrict pixel)
Definition: pixel.c:2358
PixelInfo background_color
Definition: image.h:179
MagickExport size_t GetImageListLength(const Image *images)
Definition: list.c:696
#define ExcerptImageTag
MagickExport Image * DestroyImage(Image *image)
Definition: image.c:1181
MagickExport Image * CloneImage(const Image *image, const size_t columns, const size_t rows, const MagickBooleanType detach, ExceptionInfo *exception)
Definition: image.c:796
ColorspaceType colorspace
Definition: image.h:157
MagickExport MagickStatusType ParseRegionGeometry(const Image *image, const char *geometry, RectangleInfo *region_info, ExceptionInfo *exception)
Definition: geometry.c:1647
#define QuantumRange
Definition: magick-type.h:83
MagickExport MagickBooleanType SetImageProgress(const Image *image, const char *tag, const MagickOffsetType offset, const MagickSizeType extent)
Definition: monitor.c:136
MagickBooleanType debug
Definition: image.h:334
static void SetPixelGreen(const Image *magick_restrict image, const Quantum green, Quantum *magick_restrict pixel)
MagickPrivate MagickBooleanType TransformImage(Image **, const char *, const char *, ExceptionInfo *)
Definition: transform.c:2028